Power-transmission mechanism.



J. DOEPKBR & F. W. BURGER. POWER TRANSMISSION MECHANISM.

APPLICATION FILED MAY 31, 1912.

LQE'KfiSQ, Patented Apr. 1, 1913.

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WITIVESSES if INVENTORfi 5J5 fi WM J. DOEPKBR & P. W. BURGER.

POWER TRANSMISSION MECHANISM.

APPLICATION FILED MAY 31, 1912.

1 57,530. Patented Apr. 1,1913.

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WITNESSES 5.1%

Qv. fzww- JOSEPH DOETPKEE AND "W. BUBGER, OF FUEL "WAYNE, H DIANA.

EOYVER-TEANSMXSEWGN MESHANISM;

incense To all whom it may concern Be t known that we, Josnrn DOEPKER and FREDERICK W. BURGER, citizens of the "United States, residing at Fort Wayne, in

genera-l objectto provide power-trons1n1ssionmechanisni diilerentiol in character and designed more particularly for use in motor vehicles, the said mechanism being cnlcw lated to transmit power to the wheel having the greater traction and to assure maximum efl'ort under any condition of road.

Our novel power-trzmsmi. ion mechanism is also adopted to prevent skidding; ol: :1 car incidental to the application of power and is of such character that the trnctivc cl'lort is exerted by the slower moving wheel, as distinguished from the well known dillerentiel gear in which the trot-tire c'tlort is exerted by the faster moving wheel.

Vi ith the foregoing in mind our invention will be fully understood from the fol lowing description and claims when the some are read in connection with the draw inns accompanying and 'forming part oi": this specification, in which Figure 1 is dinmctricol section of the powcr-transmission lllflfllllllfilli (:onstiinti'nfi} the best practical embodiment of our invention that we have as yet devised. E2 is a side elevation oi? the some. Fig. 3 is n side elevation of the coin member com'pi'i id in the HiOCllilYllSlll, Figs. and 5 tLlC views illustrative of one PM) of clutch niei'nhers included in. the ncchztnism, and: Figs. (3 and 7 are detail views oi the other pair of clutch nienihcrs comprised in the Z11Q(7l'l21- msin; the members shown in Figs, (3 and it hom disooscd at the oiiosi'" do of the n A v r I coin member, with rcterence t hers shown in Figs. l and. ii. diametrical section oi the com me v .c .3, Similar letters ()1. relcrenco des.

n 1 responding parts in all oi the views oi the drawings.

Our novel i mechanism comprises two drums A which, when our invention is corpora'teo in a motor vehicle are (lesi to be connected either directly or inc ico with the driving Wheels. 'l i e would have it understood, however, in til conncctio" t the drums A may be connecml Specification of Letters Patent.

Patented Apia 2., 11 31538 1912. Serial No. 70%,873.

members other than wheels, according to the application made of our invention. Each of the said drums A comprises a. body portion a, a sleeve 7; integral with and extending oiitwerd from said body portion, and a circular flange 0 directed inward trom the body portion. he two drums (W8 incloscd, by preference, in at (raising A which casing serves to hold the drums in position and. is provided with suit-ably shaped open 'ings (Z for the entrance of ti suitable hilariczint.

interposed hetweeh the opposed flanges c of thedrnins A. the coin inei'nhcr of the mechanism, and in the practical us oi: the mechanism power is applied or trai iitted to the said coin member through. the me dinin of any suitable means (not shown) The said coin member is lettered l5, and is of the Form clearly shown in Figs, 1 and S 7'. it comprise? plate 6 having one or more, prefcrnhly two slots 1 thnt descr'oe parts of a circle, and lateral projecixi is g at theopposiie sides of the piste and the center thereof: said n-ejections con-- slituting syninieti" ly shaped coins pro-- vided with ground surfaces h eccentric to the center of the nie nher.

Disposed at one side of the coin member B are clutch men'ibei's C (i and. disposed-at the opposite side of the coin member B are clutch members D B All of the sziicl clutch members are provided in their inner or o posed edges with openings 71, the WilllS of which are preferably shaped as shown, so as to enable the com surfaces 71 by acting against said wells to cause the clutch me hers-1 of each pair to spread. ll; will also he iminilcst by reference to the drawings that the clutch member C is provided in its side adjacent the coin member B with a recess 7', and that the clutch nicmbci' C 'idccl with similar recess 5}; the sold is being; located so as to rest theme-ty opposite each other when the moon hers C C are relatively arranged in proycr onion Each of the clutch members l provided with illute-rail projection derstanding of the said embodiment.

In the practical use of our novel mechanism power is transmitted through any approved means to the cam member B, and the latter through its cams g spreads the clutch members 0 U, D and presses the same against the inner surfaces of the drum flanges (2, and thereby causes the drums to revolve. ll hen, during the use of the t ansmission mechanism the pairs of clutch members are locked in the driving position, the lateral projections E of the clutch members D D occupy positions about midway be tween the side walls m and 11 of the recesses j in the clutch members (3 C In the event of one of the wheels turning faster than the.

other, as When a motor vehicle is making a turn, the clutch members complementary to the fast turning wheel are unlocked and carried forward because of the friction between the said members and the drum complementary thereto. When the clutch members are in a neutral position-. 6., a position midway between the position for driving ahead and the position for moving rear-v ward, the projections E engage sides of the recesses j, with the result that the clutch members complementary to the faster moving wheel are held from locking, and consequently the wheel is permitted to travel faster indefinitely. lhis operation is true of either wheel and. the clutch members complementary thereto irrespective of Whether the motor vehicle is moving forward or backward.

"While our novel transmission mechanism is designed more particularly for embodiment in motor vehicles. We desire 1t distinotly understood that the said mechanism may be out to any use to which it is applicable, without involving departure from the scope of our invention.

' We have entered into a detailed description of the construction and relative arrangemcnt of the elements embraced in the present embodiment of our invention in order to impart a full, clear, and exact un- \Ve do not desire, however, to be understood as confining ourselves to the said specific eonstruction and relative arrangement of parts as in the future practice of the invention such chan es or modifications may be made "fairly rall within the scope of our appended claims.

Having described our invention, what we claim and desire to secure by Lettersdatent, is:

1. ln a power-transmission mechanism, the combination of suitably supported drums, a cam member interposed between: the drums and having lateral projections constituting cams and also having elongated curvilinear apertures, clutch members arrangcdwithin one drum and at one side of the major portion of the cam member and having openings in their opposed edges to receive one of the lateral projections of the cam member andalso having recesses in their sides adjacent the major portion of the cam member, and clutch members arranged at the opposite side of the major portion of the cam member and having Openings in their opposed edges to receive the other lateral projection of the cam member and also having lateral projections extending through the said apertures of the cam member and into the recesses of the first-named clutch members; the said projections having journals disposed in the clutch members by which they are carried.

2. In" a power-transmission mechanism, the combination of suitably supported drums, a cam member interposed between said 'drums and having lateral projections constituting cams, and also having an elongated curvilinear aperture, clutch members disposed Within one drum and having openings in their opposed edges to receive one of the lateral projections of the cam member, one of the said clutch members having a reeess in'its side adjacent the major portion of the cam member, and clutch members arranged at the opposite side of the major portion of the cam member and having openings in their opposed edges to receive the other lateral projection of the cam member, one of the second-named clutch members also having a lateral projection extending through the aperture in the, cam mem her and into the said recess in one of the first-named clutch members. 3. In a power-transinission mechanism, the combination of suitably supported drums, cams arranged in said drums, clutch members disposed within one drum and having openings in their opposed edges to receive one of the cams; one of the said clutch members having a recess in its inner side, clutch members arranged in the other drum and having openings in their opposed edges to receive the other eam, and a lateral projection connected with one of the secondnamed clutch members and extending into the said recess in one of the first-named clutch members.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

JOSEPH DOEPKER. FREDERICK W. BURGER.

Witnesses:

VAN B. PERRINE, HOWARD F. HULL. 

